Haoyuan Chen Email & Phone Number

Naperville, Il, Us

Pleasanton, California, Us

● Worked in the Grid Engine team of Adaptive Planning organization: enhanced Stack data structure to represent entity hierarchical structures, enhanced the calculation support for huge financial reports by using Topological Sorting and implemented Depth-first search(DFS) to represent various dimensions in a hypercube. ● Contributed toward reengineering grid engine architecture to accommodate Long overflow. Shorten the response time of generating a report - which has 13 tiers and spreads across 3 axes - from 1 minute to 3 seconds.● Dedicated to the diffing process. Used Jenkins for running thousands of reports. Used SaveReport REST API to transform the report data into XML format. Used Linux Commands to extract statistics from log files. Made use of ElasticSearch LogStash Kibana(ELK) to navigate inside logs, retrieving error messages and time metrics. ● Developed a new module - GridEngineFeatureKnobs - which allows developers to input JSON objects to control parameters of Grid Engine. Enhanced a bookmarklet to capture the feature knobs of reports.● Worked on the new grid engine testing framework to consolidate integration tests within the Grid Engine library using JUnit5. ● Cooperated with frontend teams to understand and spot bugs in React code base. ● Worked on Oracle database, wrote queries to add supports for feature flags.

Riverside, California, Us

● Maintained, upgraded and added new modules to the existing ETA(Electronic Time & Attendance)system which has functionalities including leave management, employee information system,overtime management and payroll system.● Contributed to the backend of the docID hyperlink module, which enables users to open a document either from an external link or from inside the website. We used the Grails framework as the backend server. Since there are 5 different document types which have similar functions, I utilized the Factory design pattern, creating a Trait and 5 concrete classes implementing the Trait. When retrieving database information, We used GORM (Object Relational Mapping) for querying and persisting objects. For complex queries, We utilized Criteria and HQL. As for testing, we used Geb.● Utilized Command Object for passing data between frontend and backend; utilized Domain Objectfor modeling database tables; utilized Validation to ensure objects are in the correct format.● Developed packages, functions and procedures using Oracle database.● Utilized AngularJS which includes Data binding, Controller, Service, Scope, DependencyInjection and Directive to construct the frontend.● Utilized jqGrid to create customized grids for showing documents and manipulating them.● Utilized Git for the version control.

Princeton, Nj, Us

● Built a car rental web application which has functions including Reservation, Client Profile,Maintenance, Car Insurance, Circular system and data analysis of Car Sales.● Utilized Spring framework including Spring Boot, Spring Cloud, Spring Security, Spring JPA,Spring JDBC, Spring Cache to create Restful web server.● Utilized Angular10 to construct the front-end. Utilized Component to modularize different webcontent. Utilized Directive to create customized styling. Utilized route and router-outlet to navigateamong the single page application. Utilized Pipe to transform the data output, Utilized Guard tocheck users’ login status and users’ role to customize content to different types of users. UtilizedAngular Material for styling of web pages.● Utilized Kafka for the communication between microservices. For example, when users make a carreservation, a message is written into a specific topic. Other microservices, including user activitiesmonitoring module and internal reservation handling system will retrieve the message and process it.● Deployed the relation database Oracle to AWS RDS. Created Docker image to containerize thespring boot application and deployed it to the Amazon EC2 instance. Deployed the static files likefront-end and the media to AWS S3 bucket.

Master Of Engineering - Meng, Electrical And Computer Engineering

Bachelor Of Engineering - Be, Artificial Intelligence